Is there a pin-compatible replacement for B330B-13-F?

Yes, B340B-13-F is a strong candidate for a pin-compatible replacement. It shares the same SMB package, pin configuration, and critical electrical characteristics as the B330B-13-F.

What risks should I check before replacing B330B-13-F?

Before replacing, verify that your design can tolerate any minor parametric differences. The main parameters to check are forward voltage (Vf) for thermal impact and reverse leakage current (Ir) if used in a low-power application.

B330B-13-F Alternatives, Datasheet & Cross Reference | Diodes Incorporated

The Diodes Inc. B330B-13-F is a 30V, 3A Schottky rectifier in an SMB package, commonly used in power and switching applications. Several pin-compatible upgrades with higher voltage ratings are available.

AI replacement insight

Electrical risklow

Top candidates match or exceed key voltage/current ratings. Vf differences are the main point of review.

Package risklow

All strong candidates use the same SMB package, ensuring form and fit compatibility.

Can it be replaced directly?

Yes, B340B-13-F from Diodes Inc. is a direct pin-compatible replacement for B330B-13-F, offering a higher voltage rating in the same package and product family.

Best replacement path

The most direct replacement is B340B-13-F, which is the same product series with a higher voltage rating (40V vs 30V), providing a drop-in upgrade with improved design margin.

Main risk

The primary risk when substituting diodes is a mismatch in forward voltage (Vf) or reverse recovery time, which can affect efficiency and thermal performance. For the top candidates, this risk is low.

Recommended alternatives

A 40V upgrade in the same product series, offering a higher voltage margin with matching key parameters.

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Alternative comparison matrix

Feature / factor	B330B-13-F	B340B-13-F	B340LB-13-F	SDT5H100SB-13	Compatibility / risk
Package	SMB	SMB	SMB	SMB	SMB — Identical package ensures form and fit compatibility.; B340LB-13-F: Identical package ensures form and fit compatibility.; SDT5H100SB-13: Identical package ensures form and fit compatibility.
Voltage	30V	40V	40V	100V	40V / 100V — Higher voltage rating provides increased design margin.; B340LB-13-F: Higher voltage rating provides increased design margin.; SDT5H100SB-13: Significantly higher voltage rating.
Current	3.0A	3.0A	3.0A	5.0A	3.0A / 5.0A — Current rating is identical.; B340LB-13-F: Current rating is identical.; SDT5H100SB-13: Higher current rating provides more thermal headroom.
Forward Voltage	0.50V	0.50V	0.45V	0.62V	0.50V / 0.45V / 0.62V — Identical forward voltage ensures similar efficiency.; B340LB-13-F: Slightly lower Vf may improve efficiency.; SDT5H100SB-13: Higher Vf will increase power dissipation.
Technology	Schottky	Schottky	-	-	Schottky — Both are Schottky diodes, ensuring similar switching characteristics.

Application & sourcing insights

Questions & answers

The best alternative is B340B-13-F. It is from the same manufacturer and product family, with identical key specs but a higher voltage rating (40V vs 30V) for increased design margin.